artsc-config is located in the arts package, but the header files
required to build programs that use arts are located in
kdelibs-sound-devel. This makes writing configure scripts more difficult
because they cannot just test for the existence of artsc-config and
assume that the headers are also present.
The appropriate fix would be to put artsc-config into the
kdelibs-sound-devel package. There is no need for artsc-config unless
you are building other packages that depend on arts. Other packages that
use a *-config program, such as GTK+, also put the -config script into
the devel package.